How do I set readahead on an NFS mount point in RHEL 6 or RHEL7?

Solution Verified - Updated -

Issue

  • How do I set / control readahead on an NFS mount point?
  • Is there a way to set read-ahead for NFS since there is no block device?
  • Normally I would use blockdev --getra to show and blockdev --setra N to set a read ahead value. Is there anything analogous for NFS?
  • How can I set read_ahead_kb for NFS?
  • How can I automatically adjust readahead for NFS mount points?

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • NFS

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